Is it possible for THC to get in your system through breathing second hand marijuana smoke?

Not Medical Advice: Yes, often referred to as a "Contact High," by users, inhalation of second hand smoke from Marijuana does cause the THC to enter the system. During a study on the effects of heavy smoking, a subject on a placebo was found to have traces of the drug in his urine. Additionally, staff members observing the study found the same effects.

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